vo: why won't romney level with us about his tax plan, which gives the wealthy huge new tax breaks? because according to experts, he'd have to raise taxes on the middle class - or increase the deficit to pay for it. if we can't trust him here... how could we ever trust him here? >>> less than a month away now before election day. and how can we forget political ads, they remind us each and evy hour on the hour what is happening now. with barack obama and mitt romney had to spend hundreds of millions of dollars to define themselves for us while, of course, vilifying the other. that's why when i draw your attention to this documentary, that airs tomorrow night, on pbs, it is from the folks who bring us front line. here is just a preview. >> i got my start as a community organizer. >> i know how the private sector works. i know how jobs come. i know how they go. >> for years, these two men have been telling us their stories. >> he keeps a lot of his views to himself. >> he knows that every step he takes is a potential land mine. >> people have great respect for obama and will still say